IBook sale stampede

This, from Richmond, Va., is interesting:

More than 5,500 people queued for a chance to buy one of the 1,000 laptops and stampeded when the sale of the computers started.
In the crush 17 people were injured and four needed hospital treatment.
The four-year-old iBooks were being sold off cheap because Henrico County switched to Dell from Apple to supply laptops for its schools.

Wonder if any of them had this problem?